80 lines
2.5 KiB
C
80 lines
2.5 KiB
C
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//I did not write this file, but I don't know where it came from.
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#include "ets_sys.h"
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#include "osapi.h"
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#include "driver/adc.h"
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#define i2c_bbpll 0x67
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#define i2c_bbpll_en_audio_clock_out 4
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#define i2c_bbpll_en_audio_clock_out_msb 7
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#define i2c_bbpll_en_audio_clock_out_lsb 7
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#define i2c_bbpll_hostid 4
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#define i2c_saradc 0x6C
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#define i2c_saradc_hostid 2
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#define i2c_saradc_en_test 0
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#define i2c_saradc_en_test_msb 5
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#define i2c_saradc_en_test_lsb 5
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#define i2c_writeReg_Mask(block, host_id, reg_add, Msb, Lsb, indata) \
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rom_i2c_writeReg_Mask(block, host_id, reg_add, Msb, Lsb, indata)
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#define i2c_readReg_Mask(block, host_id, reg_add, Msb, Lsb) \
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rom_i2c_readReg_Mask_(block, host_id, reg_add, Msb, Lsb)
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#define i2c_writeReg_Mask_def(block, reg_add, indata) \
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i2c_writeReg_Mask(block, block##_hostid, reg_add, reg_add##_msb, reg_add##_lsb, indata)
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#define i2c_readReg_Mask_def(block, reg_add) \
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i2c_readReg_Mask(block, block##_hostid, reg_add, reg_add##_msb, reg_add##_lsb)
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void ICACHE_FLASH_ATTR hs_adc_start(void)
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{
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i2c_writeReg_Mask_def(i2c_saradc, i2c_saradc_en_test, 1); //select test mux
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//PWDET_CAL_EN=0, PKDET_CAL_EN=0
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SET_PERI_REG_MASK(0x60000D5C, 0x200000);
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while (GET_PERI_REG_BITS(0x60000D50, 26, 24) > 0); //wait r_state == 0
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CLEAR_PERI_REG_MASK(0x60000D50, 0x02); //force_en=0
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SET_PERI_REG_MASK(0x60000D50, 0x02); //force_en=1
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}
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uint16 hs_adc_read(void)
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{
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uint8 i;
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uint16 sardata[8];
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uint16_t sar_dout = 0;
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while (GET_PERI_REG_BITS(0x60000D50, 26, 24) > 0); //wait r_state == 0
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read_sar_dout(sardata);
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for (i = 0; i < 8; i++) {
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sar_dout += sardata[i];
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}
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#ifdef OLDWAY_NEEDS_RESTART
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//tout = (sar_dout + 8) >> 4; //tout is 10 bits fraction
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// ??? Why does this exist ??? It didn't start commented out, but now that I did comment it, it still seems happy.
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// i2c_writeReg_Mask_def(i2c_saradc, i2c_saradc_en_test, 1); //select test mux
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// while (GET_PERI_REG_BITS(0x60000D50, 26, 24) > 0); //wait r_state == 0
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// CLEAR_PERI_REG_MASK(0x60000D5C, 0x200000);
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// SET_PERI_REG_MASK(0x60000D60, 0x1); //force_en=1
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// CLEAR_PERI_REG_MASK(0x60000D60, 0x1); //force_en=1
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#else
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//Start reading a new sample.
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CLEAR_PERI_REG_MASK(0x60000D50, 0x02); //force_en=0
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SET_PERI_REG_MASK(0x60000D50, 0x02); //force_en=1
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#endif
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return sar_dout; //tout is 10 bits fraction
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}
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